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BACKGROUND The association between physician experience and the accuracy of screening mammography in community practice is not well studied. We identified characteristics of U.S. physicians associated with the accuracy of screening mammography. METHODS Data were obtained from the Breast Cancer Surveillance Consortium and the American Medical Association(More)
BACKGROUND The reasons for race/ethnicity (R/E) differences in breast cancer survival have been difficult to disentangle. METHODS Surveillance, Epidemiology, and End Results (SEER)-Medicare data were used to identify 41,020 women aged > or =68 years with incident breast cancer between 1994-1999 including African American (2479), Hispanic (1172),(More)
BACKGROUND It is unknown whether differences in the quality of breast cancer care among women from racial and ethnic minority groups, the elderly, and rural areas have changed over time across the continuum of care. METHODS The linked Surveillance, Epidemiology, and End Results-Medicare database identified 22,701 women ages 66-79 years diagnosed with(More)
The purpose of this article is to catalogue in a systematic way the available information about factors that may influence the outcome and variability of cascade impactor (CI) measurements of pharmaceutical aerosols for inhalation, such as those obtained from metered dose inhalers (MDIs), dry powder inhalers (DPIs) or products for nebulization; and to(More)
BACKGROUND Medicare data may be a useful source for determining the utilization of mammography among elderly women, but the accuracy of these data has not been established. OBJECTIVE We determined whether Medicare physician billing claims are an accurate reflection of mammography utilization among women ages 65 and older and whether they can be used to(More)
In this paper we build on previous work for estimation of the bivariate distribution of the time variables T1 and T2 when they are observable only on the condition that one of the time variables, say T1, is greater than (left-truncation) or less than (right truncation) some observed time variable C1. In this paper, we introduce several results based on the(More)
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